cloudinary-memory-server

An in-memory mock server compatible with Cloudinary SDK methods for uploading and retrieving files.

NOTE: No transformations are performed; the raw file is always returned.

Usage

Start the server

From the cli:

npx @ceteio/cloudinary-memory-server

or, in JS:

yarn add @ceteio/cloudinary-memory-server

const cloudinaryMemServer = require("@ceteio/cloudinary-memory-server");
cloudinaryMemServer();

Connect to the server

const cloudinary = require("cloudinary");

cloudinary.config({
  cloud_name: "na",
  api_key: "na",
  api_secret: "na",
  upload_prefix: "https://localhost:9443"
});

(NOTE: See SSL certificates below for important information to avoid SSL errors)

Supported endpoints

Method	Path
GET	/:cloudname/image/upload/:public_id
POST	/:api_version/:cloudname/image/upload
DELETE	/:api_version/:cloudname/resources/image/upload

SSL certificates

The cloudinary node module (and possibly other languages also) require the upload_prefix to be a secure URL (ie; https). By default, cloudinary-memory-server will generate an SSL certificate to enable the secure URL.

However, this certificate will be regenerated each time cloudinary-memory-server is run, requiring manual approval in your browswer before images will load.

To skip the approval step, it's possible to create and install a permanent trusted certificate which can then be passed into cloudinary-memory-server.

Installing a trusted SSL certificate for localhost

The recommended tool is mkcert:

1. Install mkcert
2. Setup the RootCA:

   mkcert -install

3. Create the certificates:

   cd <your-project-dir>
   mkcert -key-file localhost-key.pem -cert-file localhost.pem localhost 127.0.0.1 ::1

4. Add .pem files to .gitignore:

   echo '*.pem' >> .gitignore

5. Pass the certificate files to cloudinary-memory-server:

   SSL_KEY_FILE=localhost-key.pem SSL_CERT_FILE=localhost.pem npx @ceteio/cloudinary-memory-server

   or, in JavaScript:

   const cloudinaryMemServer = require("@ceteio/cloudinary-memory-server");
   cloudinaryMemServer({
     sslKeyFile: "./localhost-key.pem",
     sslCertFile: "./localhost.pem"
   });

Calling https URL from Node

When using the node cloudinary client, it is important to tell node that the SSL certificate used by cloudinary-memory-server can be trusted. How you do that depends on how you're setting up your SSL certificates.

With mkcert installed certificate

Node does not use the system root store, so it won't accept mkcert certificates automatically. Instead, you will have to set the NODE_EXTRA_CA_CERTS environment variable.

Given your node script is setup like so:

// index.js
const cloudinary = require("cloudinary");

cloudinary.config({
  cloud_name: "na",
  api_key: "na",
  api_secret: "na",
  upload_prefix: "https://localhost:9443"
});

Run it with the environment variable set:

NODE_EXTRA_CA_CERTS="$(mkcert -CAROOT)/rootCA.pem" node index.js

With default, temporary certificate (insecure)

Set the NODE_TLS_REJECT_UNAUTHORIZED env var, which tells node to trust all SSL certificates. This will trust the automatically generated certificate, but will also trust any https connection even if it would normally throw an error. This can pose a risk of Man In The Middle (MITM) attacks, and should be considered insecure.

Given your node script is setup like so:

// index.js
const cloudinary = require("cloudinary");

cloudinary.config({
  cloud_name: "na",
  api_key: "na",
  api_secret: "na",
  upload_prefix: "https://localhost:9443"
});

Run it insecurely with the environment variable set:

NODE_TLS_REJECT_UNAUTHORIZED=0 node index.js

Thanks

• @romajs for cloudinary-mock: cloudinary-memory-server wouldn't be possible without it!